JP2005242913A - Data movement method, ic card applied to data movement processing and terminal device receiving data movement processing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data movement method for securely moving data requiring copyright protection. <P>SOLUTION: In the data movement method for moving data from a first terminal to a second terminal, when movement object data is extracted from the first terminal, the movement object data to be transmitted from the first terminal is received by an IC card, the movement object data is encrypted together with identification information stored beforehand in the IC card, and the encrypted data is stored in a memory card (ST1 to ST4). When the encrypted data stored in the memory card is transmitted to the second terminal, the encrypted data is received from the memory card by the IC card to be decrypted, the validity of data movement is confirmed by comparing the identification information stored beforehand in the IC card with decrypted identification information obtained by decrypting the encrypted data, and the decrypted movement object data is transmitted to the second terminal (ST5 to ST11). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for moving data such as digital works stored in a terminal device such as a mobile phone. The present invention also relates to an IC card applied to such data movement processing for digital works and the like. Furthermore, the present invention relates to a terminal device that receives such data movement processing for digital works and the like.

  In recent years, digital terminal devices such as mobile phones have been widely used, and along with this, the functions of mobile phones have been improved significantly. For example, recent mobile phones have a function of downloading and storing digital works (such as incoming melody and image data) from a website. However, at present, outputting digital works stored in a mobile phone to the outside is restricted due to problems such as copyrights. Therefore, if a mobile phone is changed due to replacement of a mobile phone or repair / replacement of a mobile phone, in order to use the digital work stored in the previous mobile phone with another mobile phone, It is necessary to download the same digital work again from the content provider that provides the digital work by telephone.

For example, there is a technology that allows digital content to be freely moved or copied between devices by managing input / output information of digital content that requires copyright protection using an IC card different from the content storage device. It is disclosed (see Patent Document 1).
JP2002-7263

  However, according to the disclosed technique, there is a problem that security at the time of delivery of digital contents is not sufficient.

  An object of the present invention is to solve the above-described problems, and to provide a data movement method capable of safely moving data that needs copyright protection. It is another object of the present invention to provide an IC card applicable to data movement processing that can safely move data that needs copyright protection. Furthermore, the objective of this invention is providing the terminal device which receives the data movement process which can move the data which needs a copyright protection safely.

  The data movement method, the IC card applied to the data movement process, and the terminal device that receives the data movement process are configured as follows.

  (1) The present invention is a data movement method that uses an IC card storing identification information to store data to be moved stored in a first terminal device in a memory card and move it to a second terminal device. Then, the first terminal device instructs the IC card to encrypt the movement target data and transmits the movement target data, and the IC card issues an instruction to encrypt the movement target data. And receiving the movement target data, encrypting the received movement target data together with the identification information stored in advance, and transmitting the encrypted data obtained by the encryption to the first terminal device. The first terminal device receives the encrypted data, deletes the stored data to be moved, and transmits the received encrypted data to the memory card. The memory card receives and stores the encrypted data, transmits the stored encrypted data to the second terminal device, and the second terminal device receives the encrypted data; Instructing the IC card to decrypt the encrypted data and transmitting the received encrypted data, the IC card receiving the instruction to decrypt the encrypted data and the encryption The data is received, the received encrypted data is decrypted, and the encrypted data is confirmed by comparing the previously stored identification information with the decrypted identification information obtained by the decryption. The decoding movement target data obtained by decoding the data is transmitted to the second terminal device, and the second terminal device receives and stores the decoding movement target data.

  (2) The present invention is an IC card that is applied to a data movement process in which data to be moved stored in a first terminal device is stored in a memory card and moved to a second terminal device. Storage means for storing, movement target data receiving means for receiving the movement target data stored in the first terminal device, and the movement target data received by the movement target data receiving means together with the identification information Encryption means for encrypting, encrypted data transmission means for transmitting encrypted data obtained by encryption by the encryption means to the first terminal device, and the memory card via the first terminal device Encrypted data receiving means for receiving the stored encrypted data via the second terminal device; and the encrypted data received by the encrypted data receiving means. Decryption means for decrypting the data, confirmation means for confirming that the data movement is valid by comparing the identification information with the decryption identification information obtained by decrypting the encrypted data, and data movement by the confirmation means And decryption movement target data transmission means for transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device.

  (3) The present invention is a terminal device that receives data movement processing using an IC card that stores identification information and a memory card that stores movement target data, the storage device storing movement target data, and the IC card. Transmitting the data to be moved, receiving encrypted data obtained by encrypting the data to be moved from the IC card, deleting the data to be moved stored in the storage means, and receiving the encrypted data Moving data output processing means for transmitting data to the memory card; receiving the encrypted data from the memory card; transmitting the received encrypted data to the IC card; and encrypting from the IC card A movement data input process for receiving movement target data obtained by decoding the data and storing the received movement target data in the storage means. And a means.

  ADVANTAGE OF THE INVENTION According to this invention, the data movement method which can move the data which needs copyright protection safely can be provided. In addition, according to the present invention, it is possible to provide an IC card that can be applied to data movement processing that can safely move data requiring copyright protection. Furthermore, according to the present invention, it is possible to provide a terminal device that receives a data movement process capable of safely moving data that needs copyright protection.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an example of a digital work handling system to which the data movement method of the present invention is applied. As shown in FIG. 1, the digital work handling system includes a plurality of mobile phones 1 (for example, a mobile phone that sends data to be moved and a mobile phone that receives data to be moved), an IC card 2, and a memory card 3. It is comprised by. This system uses the IC card 2 to store the movement target data stored in the mobile phone 1 as the first terminal device in the memory card and move it to the mobile phone 2 as the second terminal device. Can do.

  As shown in FIG. 1, the mobile phone 1 includes an interface 1 a that can attach and detach an IC card 2, a communication circuit 1 b that enables communication with the IC card 2, an interface 1 c that can attach and remove a memory card 3, and a memory card 3. A communication circuit 1d that enables communication, a memory 1e that can store a digital work as data to be moved and is non-detachable, and a CPU 1f that controls each part.

  The IC card 2 includes a memory 2a for storing subscriber identification information (user identification information), a memory 2b for storing key data for encrypting / decrypting the digital work, and an ID added to the encrypted digital work. An ID management unit 2c for managing numbers (encryption processing identification information), an arithmetic unit 2d for encrypting / decrypting digital works, subscriber identification information, and ID numbers based on key data stored in the memory 2b, A communication circuit 2e that enables communication with the mobile phone 1 via the interface 1a and the communication circuit 1b, and a CPU 2f that controls each unit are provided.

  The memory card 3 includes a communication circuit 3a that enables communication with the mobile phone 1 via the interface 1c and the communication circuit 1d, and a memory 3b that stores encrypted data of the digital work.

  FIG. 2 shows data movement processing for moving a digital work stored in the mobile phone 1 as the first terminal device to the mobile phone 1 as the second terminal device in the digital work handling system shown in FIG. It is a flowchart for demonstrating. Both the first terminal device and the second terminal device correspond to the mobile phone 1, and the configurations of these devices are the same. In this data movement process, the IC card 2 and the memory card 3 are used as a pair, and the copyright protection is achieved by encrypting the digital work as the data to be moved by the IC card 2 and decrypting the encrypted digital work. The necessary data can be moved safely.

  First, the user connects the IC card 2 via the interface 1a of the mobile phone 1 (first terminal device), and further connects the memory card via the interface 1c of the mobile phone 1 (first terminal device). To do. Subsequently, using the operation keys provided on the cellular phone 1 (first terminal device), a digital work to be moved is selected, and movement of the selected digital work is instructed. Corresponding to the selection and movement instruction of the digital work, the communication circuit 1b and the interface 1a of the mobile phone 1 (first terminal device) transfer the selected digital work stored in the memory 1e to the IC card 2. And instruct the IC card 2 to encrypt the digital work (ST1).

  The communication circuit 2e of the IC card 2 receives a digital work transmitted from the mobile phone 1 (first terminal device) and receives an instruction to encrypt the digital work. The ID management unit 2c of the IC card 2 determines the ID number of the encryption process for the received digital work, and stores the determined ID number (ST2). Further, the calculation unit 2d of the IC card 2 combines the received digital work, the subscriber identification information stored in the memory 2a, and the ID number stored in the ID management unit 2c, and this combined data is stored in the memory 2b. Encryption is performed based on the stored key data, and the communication circuit 2e of the IC card 2 transmits the encrypted data (encrypted digital work) obtained by the encryption to the mobile phone 1 (first terminal device) (ST3). ).

  The interface 1a and the communication circuit 1b of the mobile phone 1 (first terminal device) receive encrypted data (encrypted digital work) transmitted from the IC card 2. Accordingly, the CPU 1f of the mobile phone 1 (first terminal device) deletes the digital work (the digital work selected at the time of the movement instruction) stored in the memory 1e, and the communication circuit of the mobile phone 1 The interface 1a and the interface 1a transmit the received encrypted data (encrypted digital work) to the memory card 3 (ST4). The communication circuit 3a of the memory card 3 receives the encrypted data (encrypted digital work), and the memory 3b stores the received encrypted data (encrypted digital work). Thus far, the output processing of the digital work stored in the mobile phone 1 (first terminal device) is completed.

  Next, the user removes the IC card 2 connected to the mobile phone 1 (first terminal device), and similarly removes the memory card 3 connected to the mobile phone 1 (first terminal device). Subsequently, the removed IC card 2 is connected via the interface 1a of the mobile phone 2 as the second terminal device, and further the memory card is connected via the interface 1c of the mobile phone 1 (second terminal device). (ST5). Further, the user uses the operation keys provided on the cellular phone 1 (second terminal device) to instruct the reception of the digital work. Corresponding to the instruction to receive the digital work, the encrypted data (encrypted digital work) stored in the memory 3b of the memory card 3 is transferred to the mobile phone 1 (second terminal device) via the communication circuit 3a. ) And the mobile phone 1 (second terminal device) receives the encrypted data (encrypted digital work) via the interface 1c and the communication circuit 1d. The mobile phone 1 (second terminal device) that has received the encrypted data (encrypted digital work) sends the received encrypted data (encrypted digital work) to the IC card via the communication circuit 1b and the interface 1a. 2 is further transmitted, and further, the IC card 2 is instructed to decrypt the encrypted data (encrypted digital work) (ST6).

  The communication circuit 2e of the IC card 2 receives encrypted data (encrypted digital work) transmitted from the mobile phone 1 (second terminal device) and decrypts the encrypted data (encrypted digital work). Receive instructions for conversion. The computing unit 2d of the IC card 2 decrypts the received encrypted data (encrypted digital work) based on the key data stored in the memory 2b (ST7). By this decryption, the decrypted digital work (original digital work), the decryption subscriber identification information, and the decryption ID number are obtained from the encrypted data (encrypted digital work). The computing unit 2d of the IC card 2 compares the decrypted subscriber identification information with the subscriber identification information stored in the memory 2a to confirm the validity of the data movement (ST8). Further, the calculation unit 2d of the IC card 2 compares the decrypted ID number with the ID number stored in the ID management unit 2c to confirm the validity of the data movement (ST9). When it is confirmed that the decryption subscriber identification information matches the subscriber identification information stored in the memory 2a (ST8, YES) and the decryption ID number is stored in the ID management unit 2c (ST9, YES), data movement is permitted, the ID number stored in the ID management unit 2c is deleted (ST10), and the communication circuit 2e of the IC card 2 sends the decrypted digital work (original digital work) to the mobile phone. 1 (second terminal device) (ST11). The interface 1a and the communication circuit 1b of the mobile phone 1 (second terminal device) receive the decrypted digital work (original digital work) transmitted from the IC card 2, and the decryption received by the memory 1e. A digital work (original digital work) is stored. In addition, the mobile phone 1 (second terminal device) receives the decrypted digital work (original digital work) and stores the encrypted data (encrypted digital work) stored in the memory 3 b of the memory card 3. ) Is deleted. The digital work input process by the mobile phone 1 (second terminal device) is thus completed, and the digital work from the mobile phone 1 (first terminal device) to the mobile phone 1 (second terminal device) is completed. Is complete.

  When the decrypted subscriber identification information does not match the subscriber identification information stored in the memory 2a (ST8, NO), or when the decrypted ID number is not stored in the ID management unit 2c (ST9, NO ) Is not allowed to move data.

  As described above, according to the present invention, the problem that conventional digital works cannot be transferred between two mobile phones without going through a server can be solved. That is, a function for storing subscriber identification information in an IC card, a function for storing key data for encrypting a digital work, a function for managing an ID number assigned to encryption processing, a digital work received from a mobile phone IC card and memory card by providing a function for encrypting / decrypting physical data, a function for checking the decrypted ID number and subscriber identification information, and a function for controlling transmission / reception of various data to the mobile phone Can be transferred from one mobile phone to another mobile phone by replacing the mobile phone with another mobile phone.

  The data stored in the memory card is encrypted with the key data (data that cannot be taken out) stored in the IC card, and the subscriber identification information stored in the IC card is included in the encrypted data. Since the ID number is included, if the memory card and the IC card are not used in pairs, the encrypted data cannot be decrypted, and the validity of the data movement cannot be confirmed. Therefore, by using a memory card and an IC card as a pair as described above, copyright data can be transferred from a safe mobile phone to another mobile phone.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.

It is a figure which shows an example of the digital work handling system to which the data movement method of this invention is applied. It is a flowchart for demonstrating the data movement process which moves the digital work stored in the mobile phone as a 1st terminal device to the mobile phone as a 2nd terminal device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile phone (1st terminal device, 2nd terminal device), 1a ... Interface, 1b ... Communication circuit, 1c ... Interface, 1d ... Communication circuit, 1e ... Memory, 1f ... CPU, 2 ... IC card, 2a ... Memory, 2b ... Memory, 2c ... ID management unit, 2d ... Calculation unit, 2e ... Communication circuit, 2f ... CPU, 3 ... Memory card, 3a ... Communication circuit, 3b ... Memory

Claims (11)

A data movement method for storing movement target data stored in a first terminal device in a memory card and moving the data to a second terminal device using an IC card storing identification information,
In taking out the movement target data from the first terminal device, the IC card receives the movement target data stored in the first terminal device, and the received movement target data is stored in advance. Encrypted together with the identification information, and the memory card stores the encrypted data obtained by this encryption,
When the encrypted data taken out from the first terminal device and stored in the memory card is transmitted to the second terminal device, the encrypted data stored in the memory card is received by the IC card. And decrypting the received encrypted data, and confirming that the data movement is valid by comparing the identification information stored in advance with the decryption identification information obtained by decrypting the encrypted data, Transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device;
A data movement method characterized by the above. A data movement method for storing movement target data stored in a first terminal device using a IC card storing identification information in a memory card and moving the data to a second terminal device,
The first terminal device instructs the IC card to encrypt the movement target data and transmits the movement target data.
The IC card receives an instruction to encrypt the movement target data, receives the movement target data, encrypts the received movement target data together with the identification information stored in advance, Transmitting the obtained encrypted data to the first terminal device;
The first terminal device receives the encrypted data, deletes the stored data to be moved, transmits the received encrypted data to the memory card,
The memory card receives and stores the encrypted data, transmits the stored encrypted data to the second terminal device,
The second terminal device receives the encrypted data, instructs the IC card to decrypt the encrypted data, and transmits the received encrypted data.
The IC card receives an instruction to decrypt the encrypted data, receives the encrypted data, decrypts the received encrypted data, and obtains the identification information and the decryption stored in advance. Confirming that the data movement is valid by comparing with the decryption identification information to be transmitted, and transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device,
The second terminal device receives and stores the decryption movement target data.
A data movement method characterized by the above.   The data movement method according to claim 2, wherein the second terminal device receives the decryption movement target data and deletes the encrypted information of the memory card. A data movement method for storing movement target data stored in a first terminal device in a memory card using an IC card storing user identification information and moving the data to a second terminal device,
The first terminal device instructs the IC card to encrypt the movement target data and transmits the movement target data.
The IC card receives an instruction to encrypt the movement target data, receives the movement target data, stores encryption processing identification information for the received movement target data, and receives the received movement target data. Data is encrypted based on pre-stored key data stored together with the user identification information and encryption processing identification information stored in advance, and the encrypted data obtained by this encryption is transmitted to the first terminal device,
The first terminal device receives the encrypted data, deletes the stored data to be moved, transmits the received encrypted data to the memory card,
The memory card receives and stores the encrypted data, transmits the stored encrypted data to the second terminal device,
The second terminal device receives the encrypted data, instructs the IC card to decrypt the encrypted data, and transmits the received encrypted data.
The IC card receives an instruction to decrypt the encrypted data, receives the encrypted data, decrypts the received encrypted data based on the key data, and stores the user identification stored in advance. Confirm that the data is legitimate data movement by comparing the information with the decryption user identification information obtained by decryption and comparing the stored encryption processing identification information with the decryption encryption processing identification information obtained by decryption. And transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device,
The second terminal device receives and stores the decryption movement target data;
A data movement method characterized by the above.   The data movement method according to claim 4, wherein the second terminal device receives the decryption movement target data and deletes the encrypted information of the memory card. An IC card that is applied to a data movement process in which movement target data stored in a first terminal device is stored in a memory card and moved to a second terminal device,
Storage means for storing identification information;
Movement target data receiving means for receiving the movement target data stored in the first terminal device;
Encryption means for encrypting the movement target data received by the movement target data receiving means together with the identification information;
Encrypted data transmission means for transmitting encrypted data obtained by encryption by the encryption means to the first terminal device;
Encrypted data receiving means for receiving the encrypted data stored in the memory card via the first terminal device via the second terminal device;
Decryption means for decrypting the encrypted data received by the encrypted data receiving means;
Confirming means for confirming that the data movement is valid by comparing the identification information with the decryption identification information obtained by decrypting the encrypted data;
Decryption movement target data transmission means for transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device based on the validity confirmation of the data movement by the confirmation means;
An IC card applied to data movement processing characterized by comprising: An IC card that is applied to a data movement process in which movement target data stored in a first terminal device is stored in a memory card and moved to a second terminal device,
Storage means for storing user identification information, key data necessary for encryption / decryption processing, and encryption processing identification information generated along with the encryption processing;
Movement target data receiving means for receiving the movement target data stored in the first terminal device and an instruction to encrypt the movement target data;
Based on an instruction to encrypt the movement target data received by the movement target data receiving means, encryption processing identification information for the received movement target data is generated, and the received movement target data is stored in advance. Encryption means for encrypting based on the key data stored in advance together with the user identification information and the encryption processing identification information;
Encrypted data transmission means for transmitting encrypted data obtained by encryption by the encryption means to the first terminal device;
Encrypted data receiving means for receiving the encrypted data stored in the memory card via the first terminal device via the second terminal device;
Decrypting means for decrypting the encrypted data received by the encrypted data receiving means based on the key data stored in advance;
Comparison between the identification information and the decryption identification information obtained by decrypting the encrypted data, and the encryption processing identification information stored in the storage means and the decryption encryption processing identification information obtained by decryption Confirmation means for confirming that the data movement is more legitimate by comparison;
Decryption movement target data transmission means for transmitting the decryption movement target data obtained by decrypting the encrypted data to the second terminal device based on the validity confirmation of the data movement by the confirmation means;
An IC card applied to data movement processing characterized by comprising: A terminal device that receives data movement processing by an IC card storing identification information and a memory card storing movement target data,
Storage means for storing movement target data;
Sending the movement target data to the IC card, receiving encrypted data obtained by encrypting the movement target data from the IC card, deleting the movement target data stored in the storage unit, and receiving Moving data output processing means for transmitting the encrypted data to the memory card;
Receiving the encrypted data from the memory card, transmitting the received encrypted data to the IC card, receiving data to be moved obtained by decrypting the encrypted data from the IC card, and receiving Movement data input processing means for storing the moved data to be moved in the storage means;
A terminal device comprising:   The movement data input processing means receives movement target data obtained by decrypting the encrypted data from the IC card, and deletes the encrypted data stored in the memory card. Item 9. The terminal device according to Item 8. A terminal device that receives data movement processing by an IC card storing identification information and a memory card storing movement target data,
Storage means for storing movement target data;
Instructing the IC card to encrypt the movement target data and transmitting the movement target data, receiving encrypted data obtained by encrypting the movement target data based on the encryption instruction from the IC card, Movement data output processing means for deleting the movement target data stored in the storage means and transmitting the received encrypted data to the memory card;
Receiving the encrypted data from the memory card, instructing the IC card to decrypt the encrypted data, transmitting the received encrypted data, and decrypting the encrypted data from the IC card; Movement data input processing means for receiving movement target data obtained by decoding based on the conversion instruction, and storing the received movement target data in the storage means;
A terminal device comprising:   The movement data input processing means receives movement target data obtained by decrypting the encrypted data based on a decryption instruction from the IC card, and deletes the encrypted data stored in the memory card. The terminal device according to claim 10.

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